by Gary Mays | Oct 5, 2020 | drain flies
Yes the tiny flies in your bathroom are drain flies
As a Service Partner client, Lynette recently sent me a photo of her bathroom floor covered in tiny flies. It didn’t take me long to identify them as drain flies, which thrive in warm temperatures above 20°C, especially in spring and summer. Unfortunately, Lynette’s attempts to kill them were futile, as the flies kept coming back.
She was baffled and frustrated that they only appeared in one bathroom, accumulating on the walls and floor while absent in the rest of the house. The photo above shows the astounding number of flies that can exist in a small area.
Cleaning your bathroom won’t eliminate these pesky flies
Despite her rigorous cleaning routine, Lynette was fed up with the drain flies persistence.
She tried using a strong bleach cleaner, but the flies returned the next day, as she’d heard from others in a similar predicament.
Finally, a friend suggested pouring a 2.5-litre container of bleach down the drains to eliminate the flies within 24 hours, but the flies remained even after Lynette followed this advice.
Identifying drain flies in your home
Drain flies can be unsightly and frustrating, but they pose no health or property damage risks. They don’t bite or transmit diseases, nor do they ruin clothes, towels, or linen.
The problem lies in their ability to breed quickly, causing frustration for homeowners like Lynette. Unfortunately, the more she killed, the more seemed to emerge.
The flies are small, at only 3-4mm in length, with dark grey bodies and hairy moth-like wings that dominate their body size, as shown in the photo below.
Solving the mystery of why drain flies only appear in bathrooms?
If you’re not on an acreage with a septic tank or sewer treatment plant, your only encounter with these annoying flies is probably in your bathroom. These flies are prolific breeders in septic tanks and treatment plants but tend to stay near their food source.
During the day, bathroom flies often sit on walls or under the vanity basin or ceiling. However, they are more active at night, so you may not see them flying or emerging from your floor waste drain.
Despite being poor fliers, drain flies can travel long distances of 3-5km, carried by the wind away from septic tanks or treatment plants. They can enter your home through your insect screens since they are small enough to fit through the holes in the mesh. Ultimately, they will seek out your bathroom floor waste drains as a food and breeding source.
The drain fly dilemma where do they live and breed?
Drain flies are weak fliers, never straying far from the bathroom floor waste drain, causing them to be exclusively found in bathrooms.
Infestations occur when temperatures exceed 20°C in spring. Drain flies multiply rapidly as their life cycle is 1-3 weeks from egg to adult. Eggs hatch within 48 hours, becoming larvae that mature within 12 days, feeding on decaying organic matter in the bathroom floor waste drain. The adult flies emerge from the drain at night, living no more than two weeks.
Tiny insects, big headache: Tips for eliminating drain flies from your bathroom?
Removing breeding sites in bathroom drains is the best way to control and eliminate drain flies. Bleach can help with minor infestations but not major ones, which require sealing and cleaning of the floor waste trap.
Our experience has shown that cleaning the area around the floor waste, and inside the drain, with Enzyme Wizard All Purpose Surface Spray will sanitise and disinfect the breeding ground and food source of drain flies.
If you’re struggling with persistent drain fly infestations, call us at Whywait Plumbing on (07) 5580 4311 to book a service call. We’ll eliminate them for good.
by Gary Mays | Mar 24, 2013 | Bathrooms, Blocked drain, Consumer Issues, drain fly, Drain Odours, Gold Coast Plumbing, Health Issues, Plumbing Maintenance
Recently here at Whywait Plumbing, we have had several calls from clients who are concerned they are about to be overrun by small drain flies in their bathroom. Generally, the concern is that they are in large numbers, and no matter what is done to kill them, every drain fly seems to multiply as there is always more the next day.
Cleaning Your Drains Doesn’t Get Rid Of A Drain Fly
Many clients had cleaned the bathroom until it could be cleaned no more. So by process of elimination, they had decided that they were coming out of one of the drains in the bathroom. Frustratingly no matter how often some clients sat and observed the drains, they never saw any of the drain flies emerging from the drain in the shower or basin or the floor waste. Many clients describe them as lazy flies, accumulating on the bathroom walls and seldom flying.
Most people observed that the flying drain flies were mainly sitting on the walls or ceiling in the bathroom. We can confirm that everyone was experiencing what is commonly known as drain flies or bathroom flies emerging from the floor waste drain where they breed.
What Do Drain Flies Look Like
A typical-looking drain fly on a bathroom wall
Drain flies are dark grey and 2mm – 4mm long with hairy moth-like wings. They have a jerky flight as they are weak fliers and usually are found close to the floor waste drain or other areas of origin, such as the shower or bath waste. This is why they seldom stray outside the bathroom. In most cases, they are breeding in the bathroom floor waste trap.
Drain flies do not bite and are not known to transmit diseases of any sort. They do not damage clothes or linen and are considered to be more of an unsightly nuisance value in your home.
The adult drain flies and larvae can be controlled by eliminating or reducing breeding sites. If the infestation is minor, pouring bleach into the floor trap will usually kill them. However, if that does not solve the problem, then you will need to kill them by thoroughly cleaning the drain lines and or sealing the floor trap.
They continually seem to be in large numbers despite always killing them because eggs hatch in 32 to 48 hours when the temperature is above 20 degrees. The larvae mature in 9 to12 days and feed on the decaying organic matter that accumulates in the floor waste trap. The life cycle of drain flies is 1-3 weeks. Adults drain flies live about two weeks, with old ones dying and new ones emerging. They feed on the wastewater in the floor waste trap. During the day, the adults rest in shaded areas under the basin or on walls near plumbing fixtures and showers and baths. Most activity occurs during the evening when the flies are seen hovering about.
Septic Tanks Breeders
If you are on acreage and have septic tanks or treatment plants, they may breed in large numbers in and around the tanks. Drain flies may be carried by prevailing wind to nearby homes up to 3 kilometres away. Adult drain flies are small enough to pass through ordinary window insect mesh screens.
Thorough Cleaning of Drains and Traps
It is the experience of Whywait Plumbing that cleaning the drains from the basin, shower and bath that discharge into the floor trap is only part of the answer. It is also beneficial to clean the floor waste trap and grate thoroughly. We recommend cleaning the whole area with No–Rinse Floor Cleaner, Sanitiser & Disinfectant, which will clean and disinfect the floor and drain. We don’t recommend the need to continually pour chemicals such as bleach down the drain as it is washed away as soon as you use any water in the basin or shower fixtures.
Drain PRO™ – The Drain Fly Solution
In 2010 Gary and Michele Mays, the owners of Whywait Plumbing Services, went through this entire experience of drain flies invading their ensuite bathroom. Gary Mays installed a Drain PRO™ unit into the floor waste, which prevents not only drain flies but also bacteria, odours and insects from exiting through the drain into the bathroom.
It is three years since the installation of the Drain PRO™ units in all of the bathroom floor traps in their home, and they have eliminated the reoccurrence of the annoying tiny lazy drain flies.
If you are experiencing the annoyance of drain flies that will not go away, call Whywait Plumbing at (07) 5580 4311 to book a service call so we can eliminate them once and for all.
